void setup() {
  // put your setup code here, to run once:
  pinMode(7,INPUT);
  Serial.begin(9600);
  Serial.println("ini over");
}

void loop() {
  // put your main code here, to run repeatedly:
  bool a=digitalRead(7);
  if(HIGH == a){
    Serial.println("HIGH");
  }else{
    Serial.println("LOW");
  }
  delay(100);
}
